chore: merge multidut pfc folder (cherry-pick #16783)

[auspham]

Description of PR

Summary: Fix cherrypick sonic-net/sonic-mgmt#16783
Fixes # (issue)

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Back port request

• 202012
• 202205
• 202305
• 202311
• 202405

Approach

What is the motivation for this PR?

How did you do it?

How did you verify/test it?

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[auspham]

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[yejianquan]

LGTM